Automobile doorlock



Oct. 29, 1935, A. M coRM icK AUTOMOBILE DOORLOCK 3 Sheets-Sheet 1 Filed June 19, 1934 NVENTOR ATTORNEY I Oct. 29, 1935. A. mcconmc 2,019,429

AUTOMOBILE DOORLOCK Filed June 19, 1954 3 Sheets-Sheet 2 INVENTOR ATTORNEY Oct. 29, 1935. A. M CORMICK AUTOMOBILE DOORLOCK Filed June 19, 1934 5 Sheets-Sheet 3 ATTORNEY UNITED STATES PATENT OFFICE AUTOMOBILE DOORLOCK Allen McCormick, Portsmouth, Ohio Application June 19, 1934, Serial No. 731,376

3 Claims. (01. 91)

This invention relates to door locks and has for the primary object the provision of a device of the above stated character which may be easily mounted in a door whereby the door may be locked either from the outside or inside thereof and the door released from the inside without the use of a key and requiring the use of a key to unlock said door from the outside thereof and further said device normally acts as a latch for retaining the door closed against accidental opening thus permitting the device to be employed in a door of an automobile or in a door of a building or the like.

With these and other objects in view this invention consists in certain novel features of construction, combination and arrangement of parts to be hereinafter more fully described and claimed.

For a complete understanding of my invention, reference is to be had to the following description and accompanying drawings, in which Figure l is a side elevation illustrating a door lock constructed in accordance with my invention, and showing the lock operating handle and keeper therefor to be located upon the outside of a door.

Figure 2 is a side elevation illustrating the handles for effecting operation of the door lock from the inside of the door.

Figure 3 is a sectional view taken on the line 33 of Figure 2.

Figure 4 is a sectional view taken on the line 44 of Figure 2.

Figure 5 is an enlarged fragmentary sectional view showing the bolt operating means of the lock.

Figure 6 is a sectional view taken on the line 6-5 of Figure 3.

Figure 7 is a sectional view taken on the line 1-1 of Figure 3.

Referring in detail to the drawings, the numeral l indicates a lock casing which may be mounted in a door in any well known manner and consists of a pair of face plates 2, one of which is arranged on the exterior face of the door while the other one is arranged on the interior face of the door and are provided with aligned openings to receive a combined locking and latch operating mechanism 3. Suitably mounted in the casing l is a spring pressed latch bolt 4 normally urged outwardly of the casing for engagement with a door keeper (not shown). The latch bolt is provided with the usual beveled end to ride against the strike face of a keeper to cause retraction of said bolt during the closing of the door.

The combined locking and latch operating mechanism 3 consists of inner and outer tubular shells or elements 5 and 6 capable of having a 5 limited sliding movement relative to each other and are limited in their movement outward of each other by flanges l and 8. The flange l is carried by the inner shell while the flange 8 is carried by the outer shell and projects inwardly l0 and outwardly with respect to the outer shell so that a portion thereof will be abutted by the flange 1 while another portion thereof will form a seat for one end of a coil spring 9 surrounding the outer shell. The inner and outer shells are 15 rotatably supported by the walls of the opening in the face plate and one end of the inner shell 5 is formed integral with a handle l0 located upon the outer face of the door and has mounted therein a key actuated lock mechanism II, the 20 barrel of which is rotated through the use of a key and has integral therewith a dog operating element l2 of substantially oval shape. Dogs l3 are pivotally mounted in the shell 5 and. have angularly related ends M which ride upon the 25 dog operating element l2 and are urged into engagement with the latter by a coil spring l5 interposed between the dogs. The free ends of the dogs are urged apart by the spring l5 when the angularly related ends l4 thereof contact with 30 the low sides of the dog actuating element l2. The angularly related ends l4 when engaged by the high sides of the dog actuating element l2 move the free ends of the dogs in a direction toward each other. The inner end of the inner 35 shell 5 is open to receive locking fingers l5 pivotally connected to a head I l, as shown at l8. A spring I9 is interposed between the fingers normally acting to urge the fingers apart so that they ride against the inner wall of the inner shell 40 5. The fingers [6 at their free ends are ofiset to form dog engaging portions 20. The fingers also have formed integrally therewith shoulders 2| which ride into and out of notches 22 formed in the inner wall of the inner shell 5. The head 45 I! is fixed against sliding movement, however, it is free to rotate with the outer shell 6 and the latter may slide with respect to the head ll due to the slots 23 receiving the projections 24 on the head. A guard plate 25 is notched to receive 50 the projections 24 and is suitably secured to one of the face plates of the lock casing and is located upon the inside of the door. A guard 26 is secured to the other face plate of the lock casing and is located upon the outside of the 55 door and this guard is shaped to receive therein the handle l and when the latter is confined within the guard it cannot be gripped nor can it turn for the actuation of the latch bolt which will be hereinafter more fully described. Inward movement of the handle l0 into the guard 26 moves the inner shell inwardly and the shoulders 2| of the fingers 6 engage with the notches 22 and lock said shell against outward movement and with the handle confined in the guard it is impossible to rotate or turn the inner shell. A coil spring 21 is interposed between the head 24 and the flange 1 to normally urge the inner shell 5 into its outermost position so that when the lock mechanism II is actuated by a key the dogs |3 engaging the portions 20 of the fingers l6 pivot said fingers towards each other and disengage the shoulders 2| from the notches 22, freeing the inner shell so that the spring 21 may act to urge the inner shell 5 outwardly and the handle l0 outwardly of the guard 26 so that a person may grip said handle for turning the shell 5 in either direction.

A finger piece or handle 30 is secured to the outer shell 6 and overlies the guard 25 and head l1. The handle 30 is located upon the inside of the door and is for the purpose of permitting a person to rotate the outer shell in either direction and also to permit the person to impart sliding movement to the outer shell against the action of the spring 9. Should the parts be positioned, as shown in Figure 5, that is the handle I0 positioned outwardly of the guard 26 and it is desired to bring the handle |ll within the guard 26 to hold the inner shell 5 against rotation from the inside of the door, a person may pull upon the handle 3|! which will impart sliding movement to the shell 6 and shell 5 through the fianges 8 and 1 so that the shoulders 2| of the fingers may move into the notches 221 and lock the inner shell in the position shown in Figure 3 with the handle l0 confined in the guard 26.

Substantially L-shaped levers 3| are located in the lock casing I and have formed integrally therewith hub portions 32, one of which is mounted on the outer shell 6 and the other mounted upon the inner shell 5. The hubs 32 are secured to their respective shells for rotation therewith. However, said shell may slide relative to said hub. One of the hubs forms a seat for the spring 9 to retain said hub against the lock casing while the other hub is confined between the lock casing and the flange 8 of the outer shell 6. The free ends of the levers 3| engage with pivotally mounted levers 33 and the latter are connected to the latch bolt 4 by links 34. The levers 33 are pivotally supported by brackets 35 carried by the lock casing. The rotation of either the outer or inner shells by their respective handles in a proper direction will cause retraction of the latch bolt. The inner shell positioned as shown in Figure 3 with the handle ID in the guard 26 will prevent retraction of the latch bolt from the outside of the door requiring the use of the key to free the inner shell 5 from the position shown in Figure 3 to occupy the position shown in Figure 5. However, with the parts positioned as shown in Figure 3 the door may be opened from the inside by turning the handle 30 in a proper direction so as to turn the outer shell 6 which will retract the latch bolt.

A lock of the character described and shown by the drawings is especially adaptable for automobile doors so that a person upon the inside of the automobile may readily open the door without the use of a key and can from the inside of the automobile lock the door against being opened from the outside through the manipulation of the handle 30 as heretofore described. The person on leaving the automobile may readily lock 5 the door against opening by pushing the handle l0 into the guard 26 causing the parts to assume the position, as shown in Figure 3, and when said parts are thus positioned the door from the outside can only be opened through the use of the key. However, when it is not desired to lock the door of the automobile from the outside, the handle I0 is permitted to remain outwardly of the guard 26 so that the latch bolt can be retracted by a turning of the handle ID in a proper l5 direction.

A hand lever 36 may be employed for imparting turning movement to the outer shell 6 and is located on the inside of the door by having its hub portion 31 journaled to the lock casing and secured to said hub portion is a flexible element 38 which is in turn connected to a projection 39 formed on the hub which is mounted to the outer shell 6. A movement of the hand lever 36 in one direction will cause a pull on the flexible element 38 and the latter due to its connection to the hub of one of the levers 3| will retract the latch bolt 4.

Having described the invention, I claim:

1. A door lock comprising a casing mounted in a door with the opposite walls thereof located at opposite sides of the door, a spring pressed latch bolt carried by the casing and normally positioned to catch into a keeper when engaged therewith, a guard secured to the exterior of one of the walls of the casing, a handle movable into and out of said guard, an inner shell integral with the handle and mounted to slide and turn relative to the casing, an outer shell receiving the inner shell, a handle secured to the outer shell and located on the opposite side of the door 40 from the first handle, latch bolt operating means between the latch bolt and each of said shells, whereby said latch bolt may be retracted at any time by the operation of the second handle and may be retracted by the first handle only when the latter is positioned outwardly of the guard, and a self-locking and key actuated means for locking the first handle in position within the guard, and means whereby a sliding movement of the outer shell by the second-named handle may bring the first handle in the guard to be held in the latter-named position by said selflocking and key actuated means.

2. A door lock comprising a casing, a spring pressed latch bolt carried by the casing and normally positioned to catch into a keeper when engaged therewith, a guard secured to the casing and located at one side of the door, a handle movable into and out of said guard, an inner shell integral with the handle and extending into the casing to slide and turn relative to the latter, an outer shell receiving the inner shell and extending outwardly of the casing at the opposite side of the door from said handle, a second handle secured to the outer shell and located at the opposite side of the door from the first handle, a head rotatably secured to the casing and fixed against sliding movement relative to the latter, spring pressed fingers pivoted to said head and extending into the inner shell to ride against the walls thereof, said inner shell having notches, shoulders on said fingers to engage with the notches for retaining the inner shell in a position to locate the first handle in the guard and prevent rotation of said inner shell, spring means normally acting to urge the outer shell inwardly of the casing, spring means normally acting to urge the inner shell outwardly of the casing for positioning the first handle outwardly of the guard, latch bolt operating means between the latch bolt and each of said shells whereby said latch bolt may be retracted at any time by operation of the second handle and may be retracted by the first handle only when the latter is positioned outwardly of the guard, and a key actuated mechanism carried by the first handle for operating the fingers to disengage the shoulders thereon from the notches of the inner shell to permit movement of the first handle outwardly of the guard.

3. A door lock comprising a casing, a spring pressed latch bolt carried by the casing and normally positioned to catch into a keeper when engaged therewith, a guard secured to the casing and located at one side of the door, a handle movable into and out of said guard, an inner shell integral with the handle and extending into the casing to slide and turn relative to the latter, an outer shell receiving the inner shell and extending outwardly of the casing at the opposite side of the door from said handle, a second handle secured to the outer shell and located at the opposite side of the door from the first handle,

normally acting to urge the outer shell inwardly 10 of the casing, spring means normally acting to urge the inner shell outwardly of the casing for positioning the first handle outwardly of the guard, latch bolt operating means between the latch bolt and each of said shells whereby said 15 latch bolt may be retracted at any time by operation of the second handle and may be retracted by the first handle only when the latter is positioned outwardly of the guard, at key actuated lock carried by the handle, a dog actuating ele- 20 ment actuated by said lock, pivotally mounted dogs carried by the inner shell and engaging said dog actuating element and adapted through the latter to pivot the fingers and disengage the shoulders thereof from the notches of the inner 25 shell and thereby permit the first handle to move outwardly of the guard.

ALLEN MCCORMICK. 

